Registry · exoplanet

HD 37124 b

Exoplanet 74 papers

harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.

Right ascension: 05h 37m 02.40s
Declination: +20° 43′ 44.3″
Galactic l, b: 185.96, -5.975
Magnitude V: 7.68
Distance: 31.663 pc

Also known as

1 identifiers

HD 37124b

Planet

NASA Exoplanet Archive, composite parameters

Host star	HD 37124 · G4IV-V
Discovery	Radial Velocity, 2002 · W. M. Keck Observatory
Orbital period	154.378 d
Semi-major axis	0.53364 au
Eccentricity	0.054
Radius	14 R⊕ · 1.25 R♃
Mass	214.54 M⊕ · 0.675 M♃
Density	0.43 g/cm³
Equilibrium temperature	366.48 K
System distance	31.663 pc

Published measurements

4 quantities measured more than once

One object can carry a dozen published estimates of the same quantity. The register keeps them side by side rather than picking a winner — the citation is part of the value.

Mass 5 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
206.5885	M_earth	± 5.085	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
214.5352	M_earth	± 5.403	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2011	2011
198.318	M_earth		Radial Velocity	NASA Exoplanet Archive	Gozdziewski et al. 2006	2006
193.87	M_earth		Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2005	2005
273.32	M_earth		Radial Velocity	NASA Exoplanet Archive	Butler et al. 2003	2003

Orbital period 4 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
154.26	d	± 0.03	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
154.378	d	± 0.089	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2011	2011
154.46	d		Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2005	2005
153	d	± 0.1	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2003	2003

Semi-major axis 5 values

Value	Unit	Uncertainty	Band / method	Source	Reference	Year
0.5253	au	± 0.0031	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.53364	au	± 0.0002	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2011	2011
0.519	au		Radial Velocity	NASA Exoplanet Archive	Gozdziewski et al. 2006	2006
0.53	au		Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2005	2005
0.54	au		Radial Velocity	NASA Exoplanet Archive	Butler et al. 2003	2003

Eccentricity 5 values

Value	Uncertainty	Band / method	Source	Reference	Year
0.05	± 0.019	Radial Velocity	NASA Exoplanet Archive	Rosenthal et al. 2021	2021
0.054	± 0.028	Radial Velocity	NASA Exoplanet Archive	Wright et al. 2011	2011
0.079		Radial Velocity	NASA Exoplanet Archive	Gozdziewski et al. 2006	2006
0.055		Radial Velocity	NASA Exoplanet Archive	Vogt et al. 2005	2005
0.1	± 0.06	Radial Velocity	NASA Exoplanet Archive	Butler et al. 2003	2003

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
HD 37124 c	Exoplanet	0″	7.68
HD 37124 d	Exoplanet	0″	7.68
HD 37124	HighPM*	6.626″	—
BD+20 1017	LongPeriodV* Candidate	127.5″	10.05
ATO J084.1538+20.6341	EclBin	494.3″	—

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/hd-37124-b · Registry entry updated 2026-08-14.